These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Putin said Sunday that he will not remain Russiaâs president for life, but will step down in line with the Russian constitution. Putin did not rule out running for a fourth term in 2018, which would extend his time in office through 2024. He said staying beyond that, however, would be âdetrimental for the country.â Putin, who is 62, has effectively led Russia since he was first elected in 2000. He stepped aside after two four-year terms to abide with constitutional term limits, retaining power as prime minister. He was re-elected in 2012 for a new, now six-year term.